electron/shell/browser/ui/cocoa/delayed_native_view_host.mm
CezaryKulakowski e64a66bfd3
fix: detach native view when its removed from parent on macOS (#43627)
Right now DelayedNativeViewHost attaches its underlying native view
when it's being attached to a widget but it doesn't detach it when
it's being detached. It may lead to use-after-free and crash.
2024-09-24 15:28:36 +02:00

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// Copyright (c) 2018 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/browser/ui/cocoa/delayed_native_view_host.h"
#include "base/apple/owned_objc.h"
#include "shell/browser/ui/cocoa/electron_inspectable_web_contents_view.h"
namespace electron {
DelayedNativeViewHost::DelayedNativeViewHost(gfx::NativeView native_view)
: native_view_(native_view) {}
DelayedNativeViewHost::~DelayedNativeViewHost() = default;
void DelayedNativeViewHost::ViewHierarchyChanged(
const views::ViewHierarchyChangedDetails& details) {
if (!details.is_add && native_view())
Detach();
NativeViewHost::ViewHierarchyChanged(details);
if (details.is_add && GetWidget() && !native_view())
Attach(native_view_);
}
bool DelayedNativeViewHost::OnMousePressed(const ui::MouseEvent& ui_event) {
// NativeViewHost::OnMousePressed normally isn't called, but
// NativeWidgetMacNSWindow specifically carves out an event here for
// right-mouse-button clicks. We want to forward them to the web content, so
// handle them here.
// See:
// https://source.chromium.org/chromium/chromium/src/+/main:components/remote_cocoa/app_shim/native_widget_mac_nswindow.mm;l=415-421;drc=a5af91924bafb85426e091c6035801990a6dc697
ElectronInspectableWebContentsView* inspectable_web_contents_view =
(ElectronInspectableWebContentsView*)native_view_.GetNativeNSView();
[inspectable_web_contents_view
redispatchContextMenuEvent:base::apple::OwnedNSEvent(
ui_event.native_event())];
return true;
}
} // namespace electron